Leather-splitting machine



Patented Aue. 3, 19265.

unirse y stessiearner oreiller..

FREDERICK-A. BRENNER, OFVIILVA'UKEE, WISCONSIN.

LEATHER-SPLITTNG MACHINE.

Application filed. March 17j, 1926. Serial No. 95,312.

' but permit them to assume positions either concentric or eccentric VWithv relation to the shaft. t

Numerous complicated methods liafve been devised by which the ring roll is enabled to adjust itself to the varying thickiiesspof the l leather and to accommodate for any irregularities in the surface thereof, and this jinvention lhas for one `of its objectsthe provision of an improved ring roll which is eXh tremely simple in construction and `which functions Iin a highly suitable manner.

Another object of this invention is the provision of means for securing the ring members` against longitudinall shifting on the shaft and so located as to be beyond the Vsphere ofthe deteriorating` influences of the acids resident in the leather atthe time of splitting. This feature particularly adapts my ring` roll for use with chrome-leather, as the chrome acid contained therein is eX- tremely destructive to the present type of roll commonly employed. j

A further ,object of this invention resides in the provision of ringmembers of equal diameters .having apertures of different diameters. and co-operating` spacer members likewise of differingdiameters. the diifer ence between the diameters of adjacent apertures .and4 adjacent spacers facilitating the securing of the ring members against longitudinal movement on the shaft.

still further object ofthis invention resides in the provision of rings having spacers so designed that replaceiiicnt ofthe rings or the spacers may beeasily accomplished.

lilith the above and `other objects in View which will appear as the description proceeds, my invention resides in the novel construction, combination and `arrangement of parts substantially as hereinafter described and more particularly defined by ythe appended claims. it being,` understood that such changes in the precise embodiment of the herein disclosed invention may be made as j come Within the scope of the claims.

In the accompanying drawing, l have il'- lustrated one complete example of the physical embodiment of my invention.' con;A

vstructed according,` to the best mode l have so far devised for the practical application of the principles thereof, and in which:

Figure l is a cross-sectional view taken through a leather VVsplitting machine equipped With my improved roll; y wlfigure 2 is a sectional vieiv .taken through i* `gere l on the Vplane of the= line illustre. ing' hoiv variations in the thickness of the leather affects the' position of the rings, and t Figure `is a perspective view of one vend of the ring roll, some of the rings being separated from the rest to more clearly illustrate the construction thereof. i

' Referring` noiv more particularly to the accompanying drawing` in which like numerals designate like parts throughout the several vievvs, 5 is an adjustably fixed roll positionod adjacent a yknife `6 and as is .usual in.

machines of this kind, the roll and knife are adjustable with respect to each other, both horizontally and vertically,` but as lthis adjustment, and the means for obtaining it forms no part of this invention, the same` has not been shown.

An auxiliary pressure roll 7 engages the top of the roll V5.y and mounted `beloiv the roll 5 is another roll 8 which is commonly/'called a ring roll and, as beforedescribed, is comaosed of a' iluralitv of rino members ilar-l i -f h ranged in juxtaposition and together forming the continuous cylindrical surfaceof the roll 8. Frictionally engraving' .the periphery of the ring roll is a drive roll 10 having an outer layer formed ofja yieldable substance suoli as rubber or the like, and positioned so as to urge the 'ring roll tovvards .the tiXed roll, especially during the operation of the machine. j A

The leather L or other material to be split is fed along av fed table 11 to `be Ven- ,gaged between the lixedroll and the ring roll and forced onto the knife to splitftliesame.

As this .process of splitting` leather is lWell.

known' in the' art, further ldetail [description thereof is deemed unnecessary except to say that due to the varied thickness of a hide or leather to be split it is evident that only one of the split portions can have a uniform thickness, which in most instances is that portion emerging fromj above the knife or between it and the fixed roll, the desired thickness'thereof being obtained by the vertical adjustment of thepxed roll.

The description tvill now directed to Y diameters.

Coperating with and inserted in the apertures of the rings is a plurality of spacer members 14 and 15, the outside diameters lof whichV are likewise varied, the larger spacers 14 being inserted in the apertures 12 and the smaller spacers 15 in the apertures 13. The entire plurality of spacers with their respective rings surrounding them are mounted on a shaft 16 `and are secured against longitudinal movement thereon by a nut 17 threaded on each end of the shaft 16.` The shaft with the spacer `members secured thereon by the clamping action of the Y nuts 17, substantially forms asolid mass,

kand still retains the separate spacer members loosely fitted to the shaft.

It will be noted that the apertures12 and'l 13 are considerablylarger than the diameters of their respective spacers 14 and 15,

thereby permitting the ring members 9k to V assume positions either concentric or ecditions the thickness! of vthe spacer Vmember is slightly greater than its .associated ring member, preferablya Vfew thousandths of an inch, thereby providingr ample play between alternate spacer mem- ,f

Vcentric With relation to the shaft, to accommodate the various thicknesses of the leather and its numerous projections or irregularities, see Figure 2. ference betwen apertures and theirrespective spacers is `constant sothat when all of the ring members Will still form one continuous roll.

In orderv to permit the ring members to freely adjust Vthemselves to the varying conindividual b-ers to allow the ring member mounted therebtween to function properly.y

It will also be seen that the diameters of the apertures yandthe spacers are so propor- -jtioned that longitudinal movement of the rings along the spacer members is impossible and furthermore the spacers are separate members secured to the shaft by clamping nuts threaded on its ends thus preventing all freezing thereof onto the shaft, an objection found in constructions Where the spacers are secured onto the shaft by set screws.

in the former type `of device, due to the action of the tanning acids on the metal, making it extremely hard to removej the spacer members.

Furthermore the difto assume concentric or eccentric with relation to the shaft.

rllhe splitting of chrome leather ini variably freezes the set screws to the partsv From theforegoing description taken in connection with the accompanying draiving, it will be readily apparent to those skilled in the art to Which an invention of' this character'appertains that I provide a ring roll for leather splitting machines which will function efficiently and, at the same tiine, be of simple construction and permit theV ready disassembling of the roll for repairs. f A

V What I claim as my invention is: 1. A device of the class described, comprising ashaft, a plurality of apertured ring members mounted on the shaft, said ring members being of equal outsidefdiameter and having their apertures alternately large and small, and a second plurality of ring members ymounted on the shaft Within Ythe apertures of said rst-mentioned ring members.

2. A device of the class described, coinprising a shaft, a plurality of apertured ring members mounted kon the shaft, said ring members having their apertures substaiitially of the same diameter as the shaft and of alternately large and small outside diameter, and a second plurality of apertured ring members of equal outside diameter and alternately large and small apertures, 1ronounted on the first-mentioned ring meiners. f i 3. A device Aof the class described, coinprising a shaft, a spacer member of relatively small diameter mounted on the shaft, an apertured ring member surrounding the spacer memberv and having its aperture substantially greater than the diameter of the spacer member, a Vsecond spacer member having a diameter greater than that of the ring member aperture mounted on the shaft and abutting the first-mentioned spacer member, and a second apertured ring member surrounding the second-mentioned spacer Vmember and having its aperture subc. stantially i greater than the diameter of said spacer member. p

4. In adevice of the class described, ka shaft, a plurality vof spacer members of varying diameters mounted on said shaft, and a plurality of apertured. ring members cooperating with thevspacer members Whereby the ring members are held against longitudinal movement on the shaft but are free positions 5. In ak device of the class described, a shaft, a plurality of spacer members of Yvarying diameters mounted on the shaft, a

plurality of apertured ring members cooperating ivith the spacer members whereby the ring members are free to assume concentric and eccentricv positions With relation to the shaft, and meansr for securing the spacer members and thering membersV against longitudinal movement on the Shaft,

said means being located adjacent the ends, of the shaft.

6. In a device of the class described, a shaft, a plurality of spacer members of Varying diameters mounted on the shaft, a plurality of apertured ring members cooperating with the spacer members whereby the ring members are free to assume concentric and eccentric positions with relation to the shaft, and means located at the l0 ends of the shaft 'for-securing the spacer members to the shaft whereby the shaft and spacer members substantially form a solid` mass. n ,l

In testimony whereof I aX my signature.

FREDERICK A. BRENNER. 

